“Good-night,” she said, and held out her hand.

He took it in his enormous hand, and, looking down at her with a quizzical expression, he said:

“You are a friend of Daniel Moore?”

Billie’s heart almost stopped beating, but she returned his look steadily.

“Yes,” she replied, quickly withdrawing her hand. Then she hurried in and locked the door behind her.

CHAPTER XIX.—A DAY OF SURPRISES.

“The Comet is going to have a rest to-day,” observed Billie the next morning at the breakfast table. “He’s being screwed up and oiled and cleaned for his last spurt across the continent.”

“For my part,” said Miss Campbell, “I’m glad to take a rest from the Comet. I think I have automobile legs, just as ocean travelers have sea legs. When I’m sitting still, I seem to be constantly moving, and when I’m moving, I feel like a young bird learning to fly. I believe that by the time we reach San Francisco, my limbs will refuse their office, as grandpapa used to say.”

The girls laughed at the picture Miss Campbell drew of herself.

“I think a bath in the lake will do us all good,” said Billie. “You can’t sink, you know, Cousin Helen. All you have to do is to lift your feet and you float about like a little chip.”